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ICD-10 CM Code H70.89

H70 Mastoiditis and related conditions
H70.8 Other mastoiditis and related conditions

H70.89 Other mastoiditis and related conditions

H70.891 Other mastoiditis and related conditions, right ear
H70.892 Other mastoiditis and related conditions, left ear
H70.893 Other mastoiditis and related conditions, bilateral
H70.899 Other mastoiditis and related conditions, unspecified ear

Excludes Type 1

preauricular sinus and cyst (Q18.1)
sinus, fistula, and cyst of branchial cleft (Q18.0)

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